Paper-crinkling machine



Feb. 12, 1929 .W. A. LORENZ PAPER CRINKLING MACHINE Filed July 2, 1927 3Sheets-Sheet 1 Feb. 12, 1929.

W. A. LORENZ PAPER CRINKLING MACHINE Filed July 2, l927 3 Sheets-Sheet 2b Gumm Feb. 12, 1929. 1,702,166

W. A. LORENZ PAPER CRINKLING MACHINE Filed July 2, 1927 3 Sheets-Sheet 3Patented Feb. 12, 1929.

UNITED STATES means PATENT UFFlCE.

WILLIAM A. LORENZ, OF WEST HARTFORD, COI'IHE'LJCTIGUT, ASSTGNOR TO THEOTAKA FABRIC COMPANY, OF HARTFORD, CONNECTICUT.

PAPER-CRINKLING MACHINE.

Application filed July 2, 1927.

The present invention relates to machines for making elastic paper. Aspointed out hereinafter more in detail, the improvements of the presentinvention may be employed for making paper having transversely tendingcrinkles or paper which has transversely extending crinkles andlongitudinally extending corrugations.

The aim of the invention is to provide machines of this sort havingvarious features of novelty, and particularly to provide machines bymeans of which webs of paper or pulp may be, very effectively andeconomically rendered elastic.

Other objects will be in part obvious and in part pointed out more indetail hereinafter.

The invention accordingly consists in the features of construction,combination of elements and arrangements of parts which will heexemplified in the construction hereinafter set forth and the scope ofthe application of which will be indicated in the appended claims.

In the accompanying drawings, I have shown, more or lessdiagrammatically, several embodiments which my invention may take, itbeing understood that these disclosures are by way of illustration onlyand are not to be taken as restrictive of my conception.

In said drawings:

Figure l is a diagrammatic View with parts in section of a machine forcorrugating andtransversely crinlrling a paper or V pulp web;

Fig. 1 is a detail view showing, in section, the portions of thecylinders and suction boX, this view being taken substantially on line1"1 of Fig. 1;

Fig. 2 is a view showing an arrangement by means of which the paper maybe crinkled at intervals;

Fig. 3 isa view similar to Fig. 1, but showing another embodiment of theinvention.

Fig. is a view showing a pair of cylinders with an associated suctionbox so arranged as to corrugate and crinkle the paper;

Fi 5 is a view similar to Fig. 2, but shows another embodiment;

Fig. 6 discloses still another form of the invention;

Serial No. 203,060.

Fig. 6 is a view of a blade with which the suction box of 6 is provided;and

Fig. 6" is a sectionalview through the blade.

in each embodiment of the invention, there is provided one or morecylinders about which the web of paper or pulp is adapted to pass and asuctionbox adapted to assist in the crinkling operation, and in someinstances, to effect or aid in effecting the op-- eration of corrugatingthe web longitudinally. In some of the figures, the cylinders aboutwhich the web passes are circumferentially corrugated or grooved and, inother cases, one or more of the cylinders are smooth. Obviously, thecylinders of the various figures may be corrugated or smooth, dependingon whether or not it is desired to produce a paper which islongitudinally corrugated as well as transversely crinkled. The machinesare adapted to operate upon webs of pulp delivered from a paper makingmachine, or upon webs of paper which may be either in a dry or partiallydry or wet condition. It it also understood that the various parts willbe supported in suitable frames, and the vacuum boxes will be connectedup with suitable suction devices. The frames and the suction d vices arenot shown in the drawings as the particular construction thereof formsno part of the present invention.

Referring to Fig. 1 of the drawings, the numeral 10 designates acylinder or roll provided with circumferential ribs 11 and interveninggrooves 12 so that the cylinder is circumferentially corrugated. Thiscylinder 10 delivers the paper to a cylinder 13 which is similar inconstruction to the cylinder 10, it having circumferential ribs 14 whichare disposed oppositely to the grooves 12 of the cylinder 10. Thecylinders are spaced apart as illustrated. The cylinder 13 is preferablydriven at a lesser peripheral speed than is the cylinder 10, and ,tothis end the cylinder 13 may be driven from the cylinder 10 throughgears 15 and 16, the latter of which is of the greater diameter. Thenumeral 17 cesignates a suction box having a lip or side 18 extendingdown between the cylinders. The face of the lip opposed to the cylinder13 is corrugated as at 19 in order to match the corrugated surface ofthe cylinder 13. The mouth of the suction box may be considered as beingthe space or channel 20 between the lip 18 and the cylinder 13.

The Web W' of paper or the like may be wetted by passing the same abouta roller located in a tank of water 26. The wet paper passes about aguide roller 27 onto the corrugated cylinder 10. Positioned in the anglebetween the web and the cylinder- 10 may be a suction box 28, thepurpose ofwlnch is to cause the paper to take the form of the cylinder10 by means of a vacuum created in the box 28 ant closely hug theperiphery of this cylinder. If desired, a corrugated roll 29 may beprovided adjacent the suction box 28 for more closely pressing the webinto the grooves of the cylinder 10. The web is carried by the cylinder10 to a point adjacent the cylinder 13 Where it is transferred onto thislatter cylinder. Since the cylinder 13 travels at a slower surface speedthan the cylinder 10, the paper will be crinkled, as at 30.

Any desired degree of crinkling may be obtained by varying the relativespeeds of the two cylinders. It will be noted that the vacuum box 17 iseffective to aid in the transfer of the paper from the cylinder 10 tothe cylinder 13. The vacuum created in this box is preferably greaterthan that created in the box 28. By way of example, a three pound vacuummay be created in the box 28 and a nine pound or greater vacuum may bemaintained in the box 17. The cylinder 13 may carry the crinkled andcorrugated paper to a belt 31. The machine just described is ofadvantage in that it is very simple in construction and will operate ata relatively high speed to produce a superior product. The vacuumcreated by the vacuum box 17 in the throat between the two cylindersinsures that the paper will be continuously transferred from onecylinder to the other.

Refer ing now to the embodiment shown in Fig. 2, 35 is a cylinder whichmay be circumferentially corrugated or smooth, in the present instanceit being illustrated as being smooth. 3? is a vacuum box having a mouth38 which is opposed to the cylinder 35. lnterposed between the vacuumbox and the suction device or pump, employed for creating a vacuum inthat box, is a valve 39 which may be of any suitable type foralternately opening and closing the connection betweenthe vacuum pumpand the vacuum box. In the present instance, this valve is shown asbeing of a rotary type and as having a number of closing membersdt).

The operation of the machine shown in Fig. is briefly as follows. Thepaper is delivered to the cylinder 35 and is carried thereby to a pointopposite the mouth 38 of the vacuum box. The rotary valve 39 allows amomentary vacuum at intervals in the vacuum box 37. Vl hen a momentaryvacuum is set up in the box, the paper is held against the mouththereof, thereby retarding the portion of the paper above the box, as at-1l-l, with the result that the paper is crinkled at that point. Thenthe vacuum is broken momentarily, with the result that. the paper willadvance with the cylinder 35. When the portion d2 of the paper above thecrinkled portion comes opposite to the mouth ol the vacuum box, a vacuumis again set up in this box, with the result that the portion oi? thepaper following the portion will be crinkled. Thus, a web of paper isobtained which is alternately crinkled and plain. The vucuum box is ofassistance in stripping the paper from the cylinder In the embodimentshown in Fig. 3, the cylinders a5 and 4-6 may be smooth. The web of pulpl? which may come from a pa per making machine is delivered by a belt4-3 to the cylinder 45. In the angle between the web and the cylinder,there may be interposed a suction box 1-9, the lip of which may becorrugated and beveled, as at 50. Between the bottoms of thecorrugatioim and the interior of the box may be ports 51 so that thevacuum is etiective in the bottom of the corrugations 50. Thus, as theweb of pulp or paper is drawn over the corrugated portion of the vacuumbox, the paper will be longitudinalh corrugated. The cylinder 4-5 maycarry the corrugated paper beneath a corrugated roll 52 which will setand more clearly dclinc the corrugations. The cylinder 15 will carry thecorrugated paper to the cylinder 46 which travels at a slower speed thanthe cyl indcr 4:5. The transfer of the web from the cylinder elh to thecylinder 46 is insured by a vacuum box 53 having a mouth 5% opposed tothe smooth or plain sprface of the cylinder 46. The lip 55 of the vacuumbox which extends down between the two cylinders is corrugated, as at56, similarly to the corrugated portion 50 of the vacuum box 49. Thevacuum in the box 53 will draw the web from the Sl'l'lOOtll cylinder d5to the smooth cylinder all and the corrugations 56 will insure theretention of the corrugated form of the web. These corrugations 56 maybe more pronounced than the corrugations 50 in order to increase theextent of the corrugations. The cylinder 46 Will carry thelongitudinally corrugated and transversely crinkled web to a delivervbelt 57. There may be associated with this belt a vacuum box 58, thepurpose of which is to insure that th web will be properly transferredfrom the cylinder lti to the belt.

Referring now to the embiniiment shown in Fig. 4, the cylinders 60 and61 are circmnterentially corrugated, and the cylinder (31 is driven at aslower peripheral speed than is the cylinder 60. 62 designates a in mumbox having an adjustable blade 63. The face of this blade opposed to thecylinder so is corru Til t ll

Elli

lilll groovcs of the cylinder (ll). lVith this an rangeinent, the papermay be corrugated on the cylinder 60, and the corrugated paper is3arried by this cylinder to the cylinder 61. lhe vacuum bOX is of ass'inc" in transfer ring the Web from one c ".iule1 to the oth r. It isunderstood, of course, tl at the'paper is crinkled, because the cylinder61 travels slowor than the cylinde 60.

Refer-en e may now be had to the embodiment shown in Fig. 5. The web ofpaper or pulp is delivered by the cylinder to the cylinder 71, and thecylinder 71 has efls r peripheral speed than the cylinder 70, thepreceding embodiment. These cylinders may be plain, in which instancethe Web is transversely crinkled, or they may be circumferentiallycorrugated, in which instance the Web would be longitudinally corrugatedand cross crinkled. The web may be wet, in order that it Will properlyadhere to the cylinder 70, or a vacuum box may be used for causing theweb, either in a wet or dry state, to adhere to the cylinde 70. 72designates a suction box having a mouth 73 opposed to the cylinder 71.The suction box is connected by a pipe 7a to a suction device or pump,and it is also connected to a pressure dev'ce by means of a pipe 75.Controlling the suction and the pressure is a valve 76 Which may be ofany suitable type so long as it permits alternate connection be tweenthe suction box and the pipes 7a and 75. The valve maybe rotated oroscillated and has a groove or passage 76 for conneco ing the suctionbox and the pipe 75. It also has a groove or passage 77 for connectingthe suction box and the pipe 74. It will be understood that, With theconstruction illustrated in Fig. 5, when the suction box is connectedthrough the passage 77 with the pipe 745., a momentary suction is set upin the suction box so that the web will be drawn from the cylinder 70onto the cylinder 71 and crinkled on this latter cylinder. The valve isthen turned as to connect the suction box with the pressure device,whereupon a'blast of air is exerted through the suction box, with theresult that the crinkled portion of the paper is forced away from theend of the box. Then the vacuum again comes on with the result thatanother portion of the web is crinkled, and this crinkled portion isthen forced away by a succeeding blast oi": air. By varying the actionof the valve, the paper may be crinkled to any desired extent, andalternate plain and crinkled portions may be obtained so as to give theWeb a desired design.

Referring now to the embodiment shown in Figs. 6, 6 and 6" the cylinders80 and 81 correspond generally to the cylinders 7 0 and 71,respectively, in the preceding embodiment. The suction box 82 may beemployed for arising the web to adhere to the cylinder 80. The suctionbox 83 is somewhat similar to the suction box 62 of Fig. l. In thisinstance, the forward face of the blade S i, which is opposed to thecylinder 80, is beveled or inclined, and this inclined :ta cc hascorrugated portions 85 separated by plain portions 86. The suction 83assists in transferring the web from the cylinder 80 to the slowermoving cylinder 81 where it is crinkled. As the Web moves over thebeveled "face of the blade 84-, it is corrugated.

T claim as my invention:

1. In a paper crinlrling apparatus, a cylin- L der, a second cylinderadjacent thereto adapted to receive a paper web from the lirst cylinderand rotating in a direction opposite to said first cylinder, means forcausing a second cylinder to rotate at a slower speed than the cylinder,and suction means externally oi said cylinders for causing the web toadhere to the second cylinder.

Tn paper crinlrling apparatus, a cylinder, a second cylinder adjacentthereto and driven in a direction opposite to, and at a peripheral speedslower than, said first cylinder, and fluid pressure means externally ofsaid cylinders and between the same for assisting in the transfer of theWeb from the first cylinder to the second cylinder.

3. in a paper crinkling apparatus, a cylinder, a second cylinderadjacent thereto and dr'yen in a direction opposite to saidfirstcylinder, means for causing said second cylinder to rotate at a slowerperipheral speed than said first-cylinder, and a suction box effectivein the bight between the Web and said second cylinder and acting againstthe periphery of said second cylinder.

l. In a paper crinkling apparatus, a cylinder, a second cylinderadjacent thereto adapted to receive a paper web from the first cylinderand rotating in a direction opposite to, and at a slower peripheralspeed than, said first cylinder, suction means externally of saidcylindersfor causing the web to adhere to the second cylinder, andsuction means of lesser force than said first suction means for caus thepaper to adhere to the first cylinder.

5. Ina paper crinlrlingapparatus, a cylinder, a second cylinder adjacentthereto, means for driving said second cylinder in a direction oppositeto, and at a slower peripheral speed than, said first cylinder, oneatleast of said cylinders being circumferentially corrugated, andsuction means externally of said second cylinder and exerting suction atthe bight between the second cylinder and Web.

6. In a paper crinlrling apparatus, a circumiterentially corrugatedcylinder, a second cylinder adjacent thereto and driven in a di actionopposite to, and at a slower peripheral speed than, said first cylinder,and a suction box externally of said cylinders for exhausting air tocause the atmosphere to press the web against-said second cylinder andto assist in transferring the web from one cylinder to the other.

7. In a paper crinkling apparatus, a cylinder, a second cylinderadjacent thereto and driven in'a direction opposite to, and at aperipheral speed slower than, said first cylinder, suction means forcausing the web to adhere to the second cylinder, anda corru gatedsurface between said cylinders and against which said suction means isadapted to draw-the web as it is transferred from one cylinder toanother.

8. In a paper crinkling apparatus, a cylinder, a second cylinderadjacent thereto and driven in a direction opposite to, and at aperipheral speed slower than, said first cylinder, and a suction box forcausing the web to adhere to the second cylinder, said suction boxhaving a portion extending down into the bight between the web and thesecond cylinder, said portion having acorrugated face over which the Webis drawn as it is transferred from one cylinder to the other.

9. In a paper'crinkling apparatus, a cyllnder, a second cylinderadjacent thereto adapted to receive a paper web from the first cylinderand rotating in a direction opposite to, and at a slower peripheralspeed than, said first cylinder, suction ineans externally of saidcylinders for causing the web to adhere to the second cylinder, andmeans for breaking the suction at intervals.

10. In a paper crinlrling apparatus, a cylinder, a second cylinderadjacent thereto and driven in a direction opposite to, and at a slowerperipheral speed than, said first cylinder, means for exerting suctionat intervals for causing the paper to adhere to the second cylinder, andfluid pressure means for forcing the web away from the second cylinderbetween said intervals.

11. In a paper crinkling apparatus, a cyl- WILLIAM A. LORENZ.

